Mechanical movement.



J. H. BREWER & J. CHARLES.

, MECHANICAL MOVEMENT.

APPLICATION FILED SEPT. 15, 1914.

' 1,170,871. Patented Feb. 8,1916.

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THE CDLUMBIA PLANOGRAPH co., WASHINGTON, D. c.

J. H. BREWER & 1. CHARLES.

MECHANICAL MOVEMENT..

APPLICATION FILED SEPT. 15. 1914.

Patented Feb. 8, 1916.

2 SHEETSSHEET 2 glvwemliou THE COLUMBIA PLANOGRAPH co., WASHINGTON, D. C

T all wh om it may concern Joni v H. BREWER ND JOHN onimnns, or HAeEns'rowiv, MARYLAND.

Be it known that we, JOHN H. BREWER and JOHN CHARLES, citizens of the United States, residing at Hagerstown, in the county of, WVashington and State of Mary,- land, have invented certain new and useful Improvements in Mechanical Movements, of

. which, 7 a

which the following is a specification.

Our inventlon relates to new and useful improvements in a mechanical movement,

and hasfor its primary object the provision of a movement particularly adapted for 11ft- ..ing jacks, presses, or similar devices in which it is desired to secure. a vertical or longitudinal movement of an element.

.further object. is the arrangement of the several parts, whereby a movement ma be given in either direction. i

. A, still further object'iis the construction of such a mechanical movement which is easily operated and may be easily attached.

..-;;; ith these, and other objects in view the inv. ention.- consists in the novel details of construction and arrangementflofparts .which willlbe more clearly understood from the following description and drawings, in

- Figure l is'a view in side elevation. Fig.

2 is asectionon the line 22 of Fig. 1. Fig. I 3 -is a-vertical section. Fig. 4: is a detailof the operating pawl; Fig. 5 is, a detail of gone of thefside bearing plates. .Fig 6 .is a Qdetailof the adjusting shaft, and Fig. 7 is .adetailof the locking pawl- In the drawings, we have illustrated the mechanical movement as applied to a lifting .jack but .we desire it understood thatwe do -1 101; limit ourselves to this particular use, and as stated above,.the movement may be used on any .devicewhere it is desired to impart a;vertical or longitudinalmovement tonan element... l

[The mi e al 1 inaieas. the ssa Qro m of lifting jackstandard havingthe base 2 111 0 which the standard rests. Slidziblyimouhtedfwithinthe standard 1-1s the lifting bar '3 having the concaved seat 4: on

thetop thereof'andthe foot 5 extending fromth'eside ati-the bottom. ..The.ba r.3 is provide.d5on .one edge with a pluralityv of teeth GWlllCl'l are adapted to-beengaged by 'the lifting element for raising th e bar. t -The inechanicalr movement in; which our intention ,reside'scomprises two plates 7 one of .wh ichis secured'lto each sideof the stand- Lar larmml et e t 8 were his-as MECI-IANJFCAL MOVEMENT.

the plates and sides of the standard. The plates 7 are provided with the extensions or ears 9 the purpose of which will be presently described, A liftingpawl10 is pivotally connected to the plates 7 by means of the extendingarms 11 and isprovided with the ears l2 to which is pivotally connected' an operatinglever 13, [at 14:. This operating leveris provided with aplurality of perforations 15,.the purpose of which will be presently described. Links 16 are connected "to the operating lever.l3 and to'the ea'rs9 of1the plates 7 andaishaft 17 forms the connecting means for the links I6lto the ears .9 of. theplates 7.. This. shaft 17 is provided with'a bifurcatedextension ieana a rod 1 9 is secured withinthe.bifurcated portion. A screwv threaded rod 20; passes through Ybne end of the shaft 17 and is. adapted t engage curved plate 21 on one of the plates 7. The

purpose of this screw .threadedjrod is V.

for releasing the shaftjwherebyfitlinayflbe rotated for-"changingthe position ofs'e've'ral elements for reversing .the movement of the operating. parts; This will. be moreclearly brought out later jas the descriptionpro.

ceeds. Af'pawl 22jis'pivotally connect'edito 7' i the top of the. 'standa'rdf'I and is. adaptedto engage the teethfigon the, bare, A bolt'g23 passes through an ear 24 on' the pawl 'and-:se-'

oured to the bolt 23 andtoflthe bar 19 inithe bifurcated portion 18 ofjthefshaft' 172 is a connecting} wire 25Uhaving the spring .26 formed midway the-ends thereof." -1} ,j lVhen the'several parts of the device are 7 in the. Position shown in 1, .and,3i,of

"the drawings, the bar [3 is, adapted to, be i i raise'd by' the operation foffthe" lever 13-. To raise the bar the lever 13 is raised'thereby releasing the liftingpawll0 from the teeth.

' 6 and allowing'the pawl to drop downward toward the next lower tooth. Then when the lever vis-jdepressed orjlowered the pawl engages thegtooth and will thereby'ra'iseflthe 'l00 bar l/Vhen thelever13is raised all ofthe parts assume the positionshown. in dotted.

11infes andit willfllbe noted that the wire 25 securely holdsthefpawlj 22 in engagement with the. teeth. When it is. desiredto lower the bar 3 the screw bolt, 20. is. released from the .curved' plate 21v andffi'the shaft rotated,

s ans. hi :a ifi nrwhm the lever 13 is lowered it will draw the pawl 22 away from the teeth 6 and the pawl 10 on the lever will engage the teeth. 6 and when the lever is raised it will allow the bar 3 to drop so that the pawl 22 will engage the next higher tooth. In lowering the bar it will be understood that the movement of the lever is opposite from that in raising the bar. In raising the bar the pawl 10 engages under the teeth and by pulling down on the lever the bar is raised. In lowering the bar the lever is lowered so as to engage the top of one of the teeth and as the lever is raised forces down the tooth and lowers the bar. While engaging the lever with the teeth the pawl 22 will engage and hold the bar in position. As the pawl 10 is brought into contact with the teeth the lever being in its lowermost position the pawl 22 will be drawn from the teeth by means of the wire 25. As the lever is raised to lower the bar the wire 25 will again force the pawl 22 into engagement with the teeth, thereby locking the bar until the lever is again in position for lowering the same. In order to secure various ad- "ustments for o eratin the lever the erforations 15 are provided in the lever and the links 16 may be connected by means of the pin passing through any of the perforations. so

I-Iaving fully described the invention what we claim as new and desire to secure by Letters Patent is:

1. In a mechanical movement the combination with a guide and a toothed bar operating therein, of aplate mounted in the guide, a link connected to said plate, an operating lever supported by said link, a pawl pivotally connected to said plate and lever adapted to engage the toothed bar.

2. In a mechanical movement the combination with a guide and toothed bar operating therein, of a plate secured to the guide, a link connected to said plate, an operating lever supported by said link, a pawl. connected to the plate and lever and engaging with the toothed bar, a rotatable shaft secured to said plate and link, a second pawl adapted to engage the toothed bar, and

means connecting the second pawl and rotatable shaft.

3. In a mechanical movement, the combination with a guide and a toothed bar operating therein, a plate mounted in said guide,

link secured to the plate, an operating lever supported by said link, a pawl pivotally connected to'the plate and lever engaging with the toothed bar, a second pawl adapted to engage with the toothed bar, a rotatable shaft secured to tile plate and link,

means for adjusting the rotatable shaft, and

means connecting the second pawl and rotatable shaft.

4. In a mechanical movement the combination with a guide and atoothedbzzr operating therein, of a plate secured to the guide,

nation with a guide and a toothed bar operating in the guide, of a plate mounted in the guide, a. pawl pivotally connected to the plate, a lever pivotally connected to the pawl, a link connecting the plate and lever, a second pawl pivotally connected to the guide and adapted to engage the toothed bar, and means connecting the lever and second mentioned pawl, said means consisting of the said link and a flexible member.

6. In a mechanical movement the combination with a guide and a toothed bar slidably mounted in the guide, of a plate piv otally secured to the'guide, a pawl pivotally connected to the plate, a lever pivotally connected to the pawl, a link connecting the plate and lever, a rotatable shaft secured to the link and plate, means for rotating the shaft, a second pawl secured to the guide, and meansconnecting the second pawl and rotatable shaft.

7 In a mechanical movement the combination with a guide and a toothed bar slidable in the-guide, of a plate pivotally mounted in the guide, a pawl pivotally connected toothed bar, a lever pivotally connected to the pawl, a link connecting the lever and plate, a rotatable shaft connected to the link and plate and provided with a bifurcated extension, a threaded bolt passing through the shaft and engaging the plate, a second pawl pivotally. connected to the guide and adapted to engage'thebar, and means connecting the second pawl and bifurcated eX- tension on the shaft.

8. In a mechanical movement the combination with a guide and a toothed bar slidable' therein, of a. plate pivotally mounted within the guide, a curved projection secured on the plate, a pawlpivotally connected to the plate, a lever pivotally con nected to the .pawl,a link connecting the plate and lever, a rotatable shaft secured to the link and plate, a threaded bolt passing through the shaft and adapted to engage the curved projection on the plate, a second pawl pivotally connected to the guide and adapted to engage the toothed bar, and flexible means connecting the second pawl and rotatable shaft. 7

9. In a mechanical movement the combination with a guide and a toothed bar slidable therein, of a plate pivotally mounted within the guide, a curved projection on the plate, a pawl pivotally connected to the to the' plate and adapted-to engage the plate, a lever provided with a plurality of perforations pivotally connected to the pawl, a'link connected to the lever and plate, a shaft rotatably connected to the plate, a threaded bolt passing through the shaft and adapted to engage the projection on the plate, a second pawl pivotally connected to the guide and adapted to engage the bar, and a flexible connectionconnected to the second pawl and rotatable shaft.

10. In a mechanical movement the combination with a guide and a toothed bar slidable therein, a pair of plates pivotally mounted within the guide,'a pawl pivotally mounted between the plates, a lever pivotally connected to the pawl, a pair of links connecting the lever and plates, a shaft rotatably mounted between the plates, a second pawl pivotally connected to the guide, and flexible means connecting the said second pawl and rotatable shaft.

11. In a mechanical movement the combination with a guide and a toothed bar slidable therein, of a pair of plates mounted in the guide, curved projections secured to connected to the guide and adapted to engage the toothed bar, and a flexible connection between the second pawl and bifurcated extension of the rotatable shaft.

In testimony whereof we afl'ix our signatures in presence of two witnesses.

JOHN H. BREWER.

JOHN CHARLES.

l/Vitnesses:

J C. WIEsNnR, L. B. Bm'rs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

